. >> a gunman stormed sandy hook elementary school. when it was over 6 adults and 20 first graders were dead. >> they're just babies. >> the shooter 20-year-old adam lanza killed himself. it was the second deadliest school shooting in u.s. history. >> in july a man opened fire during the midnight premier of the new bat man movie in colorado. >> he took the gun and pointed it to my face. >> james holmes killed 12 people and wounded 58 others. >> the shooting death of an unarmed florida teenager sparked protest around the country. george zimmerman argued he shot 17-year-old trayvon martin in self-defense but prosecutors charged him with murder. >> a judge sentenced jared lee loft ner to 7 life terms for the attempted assassination of gabby giffords. >> super storm sandy slammed into the east coast. >> these are our homes and we lost everything. everything is gone. >> the biggest storm caused billions of dollars in damages. >> former penn state assistant football coach jerry sandusky was sentenced to 30 to 60 years in prison for sexually